In a previous paper [1]}, the authors propose the Optimistic Gradient (OG) method and Optimistic AdaGrad (OAdagrad) method. In this section, we extend them to the Extra-Gradient type algorithms: Stochastic Extra-Gradient (SEG) and Adaptive Extra-Gradient (AEG). We put the result in the appendix because it is just a by-product of this research and not our main result.
